• Chinese Optics Letters
  • Vol. 19, Issue 11, 110604 (2021)
Mengli Liu, Mingyi Gao*, and Junchi Ke
Author Affiliations
  • Jiangsu Engineering Research Center of Novel Optical Fiber Technology and Communication Network, Suzhou Key Laboratory of Advanced Optical Communication Network Technology, School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
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    Abstract

    Probabilistically shaped (PS) pulse amplitude modulation (PAM) is a promising technique for intra-data-center networks due to its superior performance, for which a low-complexity and cost-effective distributed matching method is critical. In this work, we propose an energy-level-assigned method to yield PS-PAM-4 signals with various bit rates based on variable probabilistic distributions. We experimentally demonstrate the proposed method in a 25 Gbaud PS-PAM-4 transmission over a bandwidth of approximately 10 GHz. Compared to a uniform PAM-4 system, the proposed multi-distributed PS-PAM-4 system approaches the hard decision threshold at a wide range of received optical power for different applications.
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    Mengli Liu, Mingyi Gao, Junchi Ke. Multi-distributed probabilistically shaped PAM-4 system for intra-data-center networks[J]. Chinese Optics Letters, 2021, 19(11): 110604
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    Category: Fiber Optics and Optical Communications
    Received: Jul. 29, 2021
    Accepted: Sep. 6, 2021
    Posted: Sep. 8, 2021
    Published Online: Oct. 12, 2021
    The Author Email: Mingyi Gao (mygao@suda.edu.cn)